Expert Creator and QuickFire Artiste Trophy Help

I thought I completed all levels in the Tutorials but I didn't get the Expert Creator trophy for some reason. What did I do wrong and how can I check my progress? I have no way in knowing how many levels in the Tutorials I did.

Also, the QuickFire Artiste trophy is very hard to get. Any tips on how to shoot 40 paintballs in under 5 seconds? If all you need to do is tap the R1 button extremely fast, then perhaps my friend can do it for me..

Thanks and hopefully you can help me get the Platinum for Little Big Planet after all these years!